Whit spots on chalice

[phillyb614]

Hi guys,

I have noticed a white spot on my chalice. Noticed it a couple of days ago. Wondering if anyone has run into this before/knows whether or not it’s an issue. This is the only coral I have noticed this on. Any help would be appreciated.

FYI, I took pics right after I fed them. Do please disregard the reef roofs it’s eating.

 

[EeyoreIsMySpiritAnimal]

Pictures under white lights will help

 

[phillyb614]